Check out this behind-the-scenes photo gallery from Billy F. Gibbons' recent Guitar World photo shoot. Gibbons appears on the cover of the January 2012 issue of the magazine, in which he discusses the next ZZ Top album, which is expected in the spring, and is among the most anticipated releases of 2012.

Ninebuzz offers apps in five different genres, including Acoustic Blues, Humbucker Blues, Jazz, Reggae and Rock, each for $1.99, and a Combo App with all five styles for $5.99. Each style features a major and minor jam track that can be transposed to the keys of A, B, C, D, E and F, as well as charts of each chord progression and scale diagrams of the corresponding major and minor pentatonic scales.

German progressive metal quartet Obscura are working toward releasing Illegitimation, a collection of demos spanning the band's career. The guys premiered a demo version of "Incarnated" earlier this week on GuitarWorld.com, and have now sent over another pre-production demo from Cosmogenesis, "Open the Gates." You can stream the track in full below.

Over the years, the Red Hot Chili Peppers have been accused of a lot of things (even convicted of a few). But one charge that has never been leveled at the band, in any of its incarnations, is that the Chili Peppers are shy or retiring.

Dimebag Darrell is busting. The Pantera guitarist has just received confirmation that he and his bandmates will be supporting Black Sabbath on Sabbath's upcoming U.S. tour -- a monster thrill for Dimebag, an admitted Sabbath fanatic. "Opening for those guys is definitely the honor of a lifetime," says the goateed guitarist.